Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing my new design;

FIG. 2 is an example of FIG. 1; and,

FIG. 3 is another example of FIG. 1.

The dot dash lines in the figures represent an unclaimed boundary line and form no part of the claimed design. 

CLAIM I claim the ornamental design for a display screen or portion thereof with icon, as shown and described. 